Tibial diaphyseal fractures are commonly seen in physically active young people and are commonly seen as a result of road traffic accidents (RTA). The intramedullary interlock nailing combines control of length, alignment and rotation, preserves periosteal blood supply, some amount of endosteal blood supply and with biological osteosynthesis, lowers the infection and malunion. Closed intramedullary interlock nailing under C arm guidance is a well estabilished standard procedure for treatment of diaphyseal fractures of tibia. Patients operated with this technique can be ambulated early without external immobilization in majority of cases, patients are allowed to resume work as early as tolerated and this procedure also

reduces the hospital stay and boosts up the morale of the patient. Patients of both sexes of adult age who had a tibia fracture were admitted to the orthopaedic department were included in the study. Type of fracture and the level of fracture were assessed and the follow up was done using Alho and Ekland criteria. Average age of the patient in our study is 32.9 years. Road traffic accidents were the main mode of injury in 87% of cases. Females required smaller sizes of nail 8 mm and 9 mm and males required larger than females i.e 10 mm and 11 mm. Six patients required dynamisation (13.33) and one patient required dynamisation & fibulectomy (2.22%). In our study superficial infection is seen in 4.44% of patients and anterior knee pain in 11.11% of patients and fat embolism is seen in 2.22% of patients and delayed union is seen in 6.67% of patients.  In the present study 35 patients (77.78%) had excellent, 7 patients (15.56%) had good, 3 patients (6.67%) had fair functional outcome.

Keywords: Diaphyseal fractures, tibia, Management of the fractures, nailing